Finding the Fourth Proportional to 285,315.22, 393,730.16 and 157,988.08
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Solution
The fourth proportional to 285,315.22, 393,730.16 and 157,988.08 is: 218,020.87
Step by Step Solution
- Step 1: Write the proportion equation
285,315.22 : 393,730.16 = 157,988.08 : x - Step 2: Convert to fraction form
285,315.22/393,730.16 = 157,988.08/x - Step 3: Cross multiply
285,315.22x = 393,730.16 × 157,988.08 - Step 4: Simplify right side
285,315.22x = 62,204,672,016.49 - Step 5: Solve for x
x = 62,204,672,016.49/285,315.22 - Step 6: Final answer
x = 218,020.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.